/**
**************************************************************************************
*Palisma - Secrets of the Illuminati is an open-source 2D RPG                        *
*Copyright (C) 2006, Tony Sparks                                                     *
*                                                                                    *
*This library is free software; you can redistribute it and/or                       *
*modify it under the terms of the GNU Lesser General Public                          *
*License as published by the Free Software Foundation; either                        *
*version 2.1 of the License, or (at your option) any later version.                  *
*                                                                                    *
*This library is distributed in the hope that it will be useful,                     *
*but WITHOUT ANY WARRANTY; without even the implied warranty of                      *
*MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU                   *
*Lesser General Public License for more details.                                     *
*                                                                                    *
*You should have received a copy of the GNU Lesser General Public                    *
*License along with this library; if not, write to the Free Software                 *
*Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA      *
**************************************************************************************
*/
#pragma once
#include "kernel.h"
#include "shared/stringutil.h"
#include "Cvars.h"
#include <stdlib.h>
#include <sstream>

extern Kernel* g_kernel;
//-------------
// Common Functions availible through the console


/**
========================
Exit the game
========================
*/
class Exit_f : public ICommand
{
public:
    Exit_f() { };
    void Exec(std::string &s) {
        g_kernel->KillAll();
    };

    ~Exit_f() { };

};

/**
======================
Clear the console window
======================
*/
class Clear_f : public ICommand
{
public:
    Clear_f() {};
    void Exec(std::string &s) {
        g_kernel->GetConsole()->GetDisplay()->m_printStack.clear();      
    };
    ~Clear_f() {};
};

/**
====================
Print to the console
====================
*/
class Echo_f : public ICommand
{
public:
    Echo_f() {};
    void Exec(std::string &s) {
        g_kernel->LPrintf( s.c_str() );
    };
    ~Echo_f() {};
};

/**
====================
Execute a script file
====================
*/
class Exec_f : public ICommand
{
public:
    Exec_f();
    void Exec(std::string &file);

    ~Exec_f() {};
private:
    int ParseFile(std::string &file);

};


/**
===================
Set a cvar
==================
*/
class Set_f : public ICommand
{
public:
    Set_f() {};

    void Exec(std::string &s) {
        std::string name, value;
        StringUtil token(s);

        // parse the cvar name
        if ( token.HasNext() ) {
            name = token.GetNext();   
            if( !g_kernel->GetCvars()->IsValid(name) ) {
                g_kernel->LPrintf( ("Parse error, invalid cvar name --> " + name).c_str());
                return;
            } 
        }
        else
        {
            g_kernel->LPrintf( ("Parse error, no cvar name specified! --> " + s).c_str());
            return;
        }
        std::cout << name << std::endl;
        // get the value
        if ( token.HasNext() ) {
            value = token.GetNext();
        }
        else
        {
            g_kernel->LPrintf(g_kernel->GetCvars()->GetStringValue(name).c_str() );
            return;
        }
        // register it
        if( !g_kernel->GetCvars()->SetCvarValue( name ,  value) )
            g_kernel->LPrintf( (name+ " is write protected").c_str());
           
    }

    ~Set_f() {};
};

/**
======================
Create a dynamic cvar
Used for scripting
======================
*/
class Create_f : public ICommand
{
public:
    Create_f() {};

    void Exec(std::string &s)
    {
        std::string name ="", value = "";
        StringUtil token(s);
        // parse the cvar name
        if ( token.HasNext() ) {
            name = token.GetNext();   
        } 
        else
        {
            g_kernel->LPrintf( ("Parse error, no cvar name specified! --> " + s).c_str());
            return;
        }

        // get the value
        if ( token.HasNext() ) {
            value = token.GetNext();
        }
        else
        {
            g_kernel->LPrintf( ("Parse error, no cvar value specified! --> "+ s).c_str());
            return;
        }
        // register it -we only allow dynamic cvars that are saveable
        g_kernel->GetCvars()->RegisterCvar( name , value, (float)atof(value.c_str()), CVAR_SAVE );
        g_kernel->LPrintf( ("Cvar created: " + name + " " + value).c_str() );
    }

    ~Create_f() {};
};

/**
=====================
List available cvars
=====================
*/
class List_f : public ICommand
{
public:
    List_f() {};
    void Exec(std::string &s) {
        std::map< std::string, cvar>::iterator it;
        int count = 0;
        /**
         * Print each cvar
         */
        for( it = g_kernel->GetCvars()->GetCvars().begin(); it != g_kernel->GetCvars()->GetCvars().end(); )
        {
            ++count;
            g_kernel->LPrintf( (it->second.name + " = " + it->second.svalue).c_str() );
            ++it;
        }
        // convert a float to a string
        std::stringstream buf;
        buf << count;
        g_kernel->LPrintf( ("  Total cvars: " + buf.str()).c_str() );
    };

    ~List_f() {};
};

/**
=============================
Toggle logging
=============================
*/
class Log_f : public ICommand
{
public:
    Log_f() {};
    void Exec(std::string &s) {
        float v = (float)atof(s.c_str());
        
        if ( v < 0 )
            v = 0;
        else if ( v > 0 )
            v = 1;

        g_kernel->GetCvars()->SetCvarValue("logger", v );
        g_kernel->GetConsole()->SetLog( v );
    };

    ~Log_f() {};
};

/**
=============================
Display all the commands
=============================
*/
//class CmdList_f : public ICommand
//{
//public:
//    CmdList_f() {};
//    void Exec(std::string &s) {
//        // TODO
//    };
//
//    ~CmdList_f() {};
//};


/**
========================
Run a script
========================
*/
class Run_f : public ICommand
{
public:
    Run_f() {};
    void Exec(std::string &s) {
        if ( s.size() )
            g_kernel->GetScriptEngine()->RunFile( s );
        else
            g_kernel->LPrintf("<usage> run \"script_file\"");
    };

    ~Run_f() {};
};